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Measurement of free electron density during photon irradiation

Posted on:2012-11-14Degree:Ph.DType:Dissertation
University:University of MinnesotaCandidate:Barnett, Frank MFull Text:PDF
GTID:1451390008498343Subject:Physics
Abstract/Summary:
To disrupt molecules and therefore make them and their accompanying biological cells inactive, it is generally necessary to create more than one ionization within the molecule.;This study is to use an electron linear accelerator to generate high energy photons, which then irradiate macroscopic volumes of animal cells in a measurement enclosure. During irradiation the conductivity of the volume will be measured, and at the end of irradiation, the decay of conductivity will be measured as a function of time. In order to obtain accurate timing of the cessation of radiation, a timing device has been constructed. It will be tested prior to the start of the measurements.;The purpose of this study is to establish whether photon irradiation delivered in short, high intensity bursts, would be more effective in destroying malignant cells by producing multiple ionization within molecules of the cell.
Keywords/Search Tags:Cells, Irradiation
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